Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
trinh vat » trinh van, trinh luat, sinh vat
nang cong » nang song, dang cong, bang cong
cong dang » cong dong, cong dan, cong dung
dang toan » dang tran, dan toan, dung toan
theo rau » theo dau, theo mau, theo chu
rau sach » cau sach, hau sach, khau sach
vat nang » van nang, va nang, vat mang
toan cao » toan ban, toan tap

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: theo rau sach - hanh trinh vat nang cong dang toan cao~.
• Adding a wildcard symbol may retrieve word variants: theo rau sach - hanh trinh vat nang cong dang toan cao*.